Remove obviated files and code caused by nise import

Author: mroderick

lib/sinon/util/core/index.js

@@ -2,7 +2,6 @@
 
 module.exports = {
     calledInOrder: require("./called-in-order"),
-    configureLogError: require("./log_error"),
     defaultConfig: require("./default-config"),
     deepEqual: require("./deep-equal"),
     every: require("./every"),